// Copyright (c) 2015 The Chromium Authors. All rights reserved.
// Use of this source code is governed by a BSD-style license that can be
// found in the LICENSE file.

#ifndef NET_TOOLS_QUIC_TEST_TOOLS_LIMITED_MTU_TEST_WRITER_H_
#define NET_TOOLS_QUIC_TEST_TOOLS_LIMITED_MTU_TEST_WRITER_H_

#include <stddef.h>

#include "base/macros.h"
#include "net/quic/quic_protocol.h"
#include "net/tools/quic/quic_packet_writer_wrapper.h"

namespace net {
namespace test {

    // Simulates a connection over a link with fixed MTU.  Drops packets which
    // exceed the MTU and passes the rest of them as-is.
    class LimitedMtuTestWriter : public QuicPacketWriterWrapper {
    public:
        explicit LimitedMtuTestWriter(QuicByteCount mtu);
        ~LimitedMtuTestWriter() override;

        // Inherited from QuicPacketWriterWrapper.
        WriteResult WritePacket(const char* buffer,
            size_t buf_len,
            const IPAddress& self_address,
            const IPEndPoint& peer_address,
            PerPacketOptions* options) override;

    private:
        QuicByteCount mtu_;

        DISALLOW_COPY_AND_ASSIGN(LimitedMtuTestWriter);
    };

} // namespace test
} // namespace net

#endif // NET_TOOLS_QUIC_TEST_TOOLS_LIMITED_MTU_TEST_WRITER_H_
